Justin Osuji aka Sonny J Mason is a Grammy Nominated producer/singer/songwriter currently based in NW London.  

He is currently signed as an artist to Major Recording Label Warner Bros UK as Black Saint and has worked with and/or produced/ remixed for wide range of artists such as, Dua Lipa, Kimbra, Robin Schulz, Rationale, Aston Merrygold. 

He has collaborated with writers such as  Ruthanne Cunningham, Emily Warren, Caroline Ailin, Lindy Robbins, Trey Campbell, Camille Purcell,  and with No. ID, Keefus Ciancia, Warren Campbell and Mike Elizondo during time spent living in LA.

sonnyjmason